Abstract: A bracket assembly for mounting on a trombone to provide an alternative and more comfortable holding position for the instrument comprising a framework of connected tubular members including a pair of spaced side frame members and at least two spaced cross braces connected therebetween, an angularly oriented mounting portion connected to each of the side frame members, an attachment member on the free end of each mounting portion for engagement with angularly related tubular portions of the trombone, clamping means for attaching the attachment members to the trombone, and a transversely extending member attached to one of the side frame members for engagement by the hand that supports the instrument so located that said hand can optionally be positioned farther forward from the mouthpiece than if the instrument is supported by the same hand in the conventional manner.